Water jug shelf unit



FIG. 1 is a top, right perspective view of the water jug shelf unit;

FIG. 2 is a front view thereof; the rear view being identical;

FIG. 3 is a right side view thereof; the left side view being identical; and,

FIG. 4 is a top view thereof; the bottom view being identical. 

CLAIM The ornamental design for the water jug shelf unit, as shown and described. 